Running hot

2004 CHEVROLET TRAILBLAZER
175 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC
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ROSALYN36
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  • 2 POSTS
I replace a thermostat and water pump on my truck. When i drive it it is fine, but if i drive a long period of time it gets hot and i have to pull over to cool down and i can hear the water boiling in the coolant bowl. It leaks out coolant on the passenger side on the ground. Can it be my heater core?
Jul 21, 2019 at 2:01 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good evening,

Where is the leak located? Is it from the surge tank cap?

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Pressure test the system to determine the leak.

https://www.2carpros.com/articles/radiator-pressure-test

Roy

Jul 21, 2019 at 4:11 PM
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ROSALYN36
  • MEMBER
  • 2 POSTS
It is located under the car by the coolant bowl, but you can see it on the side of the right tire on the passenger side. i have a video of it.
Video (Click to enlarge)
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Jul 21, 2019 at 8:54 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
That is too general. I cannot see where it is leaking.

You need to do a pressure test as I suggested and look under the hood for the leak. Then post you video for me to view.

Roy
Jul 22, 2019 at 5:21 AM
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